SQL Counter: Part 5 (Disk Queue Length) January 7th, 2008

Vinod Kumar

PhysicalDisk Object -> Avg. Disk Queue Length
This counter measures whether I/O requests are being serviced or are waiting in the queue for the disk drive to catch up on requests. This can be a bottleneck in performance for a server in that, if it grows large or is consistently above eight for a particular disk, then that disk device cannot keep up with the arrival of new I/O requests. This can also sometimes depend on the type of disk system one is using.

Share this article

Tags: , ,

This entry was posted on Monday, January 7th, 2008 at 13:12 and is filed under Uncategorized. You can follow any responses to this entry through the RSS 2.0 feed. You can leave a response, or trackback from your own site.

Leave a Reply